Trade Receivables (Tables)

3 Months Ended

Mar. 31, 2023

Receivables [Abstract]

Summary of Receivables

Receivables from collaborations were as follows (in thousands):

	March 31, 2023
	Billed		Unbilled		Total
U.S. Department of Health and Human Services, net	$	286	$	284	$	570
Royalty receivables from partners	521		—		521
Total receivables	$	807	$	284	$	1,091

	December 31, 2022
	Billed		Unbilled		Total
U.S. Department of Health and Human Services, net	$	7,218	$	284	$	7,502
Royalty receivables from partners	741		—		741
Other collaborations	—		25		25
Total receivables	$	7,959	$	309	$	8,268